Water-soluble pentapolymer molecular brush dye capture and sedimentation agent and its preparation method and application

Abstract

The invention relates to a c and a preparation method thereof and applications thereof. The water-soluble quaternary polymer molecular brush dye trapping sedimentation agent is characterized by beingprepared from poly hydroxyethyl acrylamide as a polymer main chain, poly methacrylatoethyl trimethyl ammonium chloride as a cationic polymer with a side chain terminal end containing a carboxyl group,poly(tert-butylmethacrylate) as a cationic polymer side chain precursor polymer with a terminal end containing a carboxyl group, poly N-vinylformamide as a functional polymer side chain precursor polymer with a terminal end containing a carboxyl group, a dimethylformamide (DMF) solvent, a catalyst, 1-ethyl 3-(3-dimethylaminopropyl)carbodiimide iodomethane salt, potassium hydroxide, 1,2-cyclohexanediamine tetraacetic dianhydride and carbon disulfide, and can be used to treat dye wastewater and art coating wastewater discharged by the process of dye synthesis or dyeing and finishing. The water-soluble quaternary polymer molecular brush dye trapping sedimentation agent has the advantages of simple operation, low processing cost, strong adaptability, good trapping ability, quick sedimentationspeed, capability to treat complexed heavy metal ions and capture cationic dyes, anionic dyes, and the complexed heavy metal ions in a few seconds.

Description

technical field [0001] The invention belongs to the field of water treatment technology and polymer functional materials, and in particular relates to a pentapolymer molecular brush dye capture and sedimentation agent, a preparation method and application thereof. It is mainly used in dye wastewater and art paint wastewater discharged during dye synthesis or dyeing and finishing, and can simultaneously remove cationic dyes, anionic dyes and complexed heavy metal ions in dye wastewater. Background technique [0002] In recent years, my country's annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounts for 51%, while dye wastewater accounts for 35% of the total industrial wastewater discharge, and it is increasing at a rate of 1% year by year. Dye wastewater mainly comes from dye synthesis and dye use enterprises, and is composed of dyes and auxiliaries discharged during the synthesis or dyeing and finishing process. With the rapid de...

AI Technical Summary

Problems solved by technology

However, the chemical structure of polyacrylamide is relatively simple, and there are problems such as poor ability to capture dye molecules, slow sedimentation speed, and inability to deal with complexed heavy metal ions.